Abstract:
:The common assumption that perceptual sensitivities are related to neural representations of sensory stimuli has seldom been directly demonstrated. The authors analyzed the similarity of spike trains evoked by complex sounds in the rat auditory cortex and related cortical responses to performance in an auditory task. Rats initially learned to identify 2 highly different periodic, frequency-modulated sounds and then were tested with increasingly similar sounds. Rats correctly classified most novel sounds; their accuracy was negatively correlated with acoustic similarity. Rats discriminated novel sounds with slower modulation more accurately than sounds with faster modulation. This asymmetry was consistent with similarities in cortical representations of the sounds, demonstrating that perceptual sensitivities to complex sounds can be predicted from the cortical responses they evoke.
journal_name
Behav Neuroscijournal_title
Behavioral neuroscienceauthors
Orduña I,Mercado E 3rd,Gluck MA,Merzenich MMdoi
10.1037/0735-7044.119.1.256subject
Has Abstractpub_date
2005-02-01 00:00:00pages
256-64issue
1eissn
0735-7044issn
1939-0084pii
2005-01705-024journal_volume
119pub_type
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